Mercury porosimetry: Contact angle hysteresis of materials with controlled pore structure

Salmas, C; Androutsopoulos, G

dc.contributor.author	Salmas, C	en
dc.contributor.author	Androutsopoulos, G	en
dc.date.accessioned	2014-03-01T01:16:44Z
dc.date.available	2014-03-01T01:16:44Z
dc.date.issued	2001	en
dc.identifier.issn	0021-9797	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/14189
dc.subject	Anodic aluminum	en
dc.subject	Contact angle	en
dc.subject	Hysteresis	en
dc.subject	Mercury porosimetry	en
dc.subject	Mitrogen sorption	en
dc.subject	Nuclepore	en
dc.subject	Pore structure	en
dc.subject	Porous glass	en
dc.subject.classification	Chemistry, Physical	en
dc.subject.other	Computer simulation	en
dc.subject.other	Contact angle	en
dc.subject.other	Hysteresis	en
dc.subject.other	Nitrogen	en
dc.subject.other	Porosimeters	en
dc.subject.other	Sorption	en
dc.subject.other	Pore structure networking	en
dc.subject.other	Mercury (metal)	en
dc.subject.other	aluminum	en
dc.subject.other	mercury	en
dc.subject.other	nitrogen	en
dc.subject.other	article	en
dc.subject.other	chemical structure	en
dc.subject.other	hysteresis	en
dc.subject.other	membrane	en
dc.subject.other	porosity	en
dc.subject.other	priority journal	en
dc.subject.other	simulation	en
dc.title	Mercury porosimetry: Contact angle hysteresis of materials with controlled pore structure	en
heal.type	journalArticle	en
heal.identifier.primary	10.1006/jcis.2001.7531	en
heal.identifier.secondary	http://dx.doi.org/10.1006/jcis.2001.7531	en
heal.language	English	en
heal.publicationDate	2001	en
heal.abstract	Mercury Porosimetry (MP) hysteresis is a commonly observed phenomenon in which mercury retention disguises further the overall hysteresis picture. This article introduces a new interpretation of the MP hysteresis based on the combined effect of pore structure networking and mercury contact angle variation occurring between the mercury penetration and retraction operations, To distinguish the contribution of each factor the following investigations were carried out. Nitrogen sorption (NP) and MP experiments were performed on samples of an anodic aluminum membrane and the results were interpreted in terms of the Corrugated Pore Structure Model (CPSM), i.e,, CPSM-Nitrogen and CPSM-Mercury models, respectively. The simulation of the observed hysteresis data using the CPSM model enabled the evaluation of an identical for the two methods intrinsic pore size distribution (PSD) and cumulative surface area in perfect agreement with the respective BET value. Additionally, the CPSM analysis of data resulted in the evaluation of mercury contact angles, i.e., theta (p) = 143 degrees and theta (r) = 101.7 degrees for the MP penetration and retraction branches of the hysteresis loop, respectively. Moreover, CPSM-Mercury simulations of literature MP hysteresis data, valid for controlled-pore glasses and nuclepore membranes, led to the evaluation of contact angles, i.e., glasses: theta (p) = 143 degrees, theta (r) = 100.5-107.5 degrees and nuclepore: theta (p) = 143 degrees, theta (r) = 118-121 degrees. The latter values are comparable with relevant literature data and approximate those determined for the anodic aluminum membrane. The CPSM model employed herein proved to be a flexible and reliable model for simulating the pertinent hysteresis loops by combining pore networking and contact angle hysteresis phenomena. (C) 2001 Academic Press.	en
heal.publisher	ACADEMIC PRESS INC	en
heal.journalName	Journal of Colloid and Interface Science	en
dc.identifier.doi	10.1006/jcis.2001.7531	en
dc.identifier.isi	ISI:000169533100022	en
dc.identifier.volume	239	en
dc.identifier.issue	1	en
dc.identifier.spage	178	en
dc.identifier.epage	189	en